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Usage conditions apply
An anemometer measures wind speed. The “DINES PATENT PORTABLE ANEMOMETER 84” inscription on this example refers to William Henry Dines (1855-1927), the English meteorologist who described a metal pressure tube anemometer of this sort in 1892. The “L. CASELLA, LONDON” inscription is that of Louis Paschal Casella, an Italian instrument maker who opened a shop in London in 1848, and offered a wide range of meteorological, mathematical, optical, and philosophical instruments, and photographic apparatus. The firm became C.F. Casella in 1897, and C. F. Casella & Company Ltd. in 1910.
Ref: John William Moore, Meteorology Practical and Applied (London, 1910), p. 273.
W. H. Dines, “Anemometer Comparisons,” Quarterly Journal of the Royal Meteorological Society 18 (1892): 168-172
Currently not on view
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overall: 1 1/4 in x 14 in x 3 1/4 in; 3.175 cm x 35.56 cm x 8.255 cm
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Medicine and Science: Physical Sciences
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National Museum of American History
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